eagleburgmann_espey wka250nd_en.pdf

7/27/2019 EagleBurgmann_Espey WKA250ND_EN.pdf

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EagleBurgmann GermanyGmbH & Co. KGuere Sauerlacher Strae 6-1082515 Wolfratshausen /Germany

Phone +49 (8171) 23-0Fax +49 (8171) [email protected]

All technical specifications are based on extensive tests and our many years ofexperience. The diversity of possible applications means, however, that they can serveonly as guide values. We must be notified of the exact conditions of applicationbefore we can provide any guarantee for a specific case. Subject to change.

Carbon floating ring seals

Shaft seals

Espey WKA250ND

Features

Chamber seal (modular design), optional withhousing and lidMulti-part seal rings, radially cutVery small operation gap - low leakageDry runningSelf-adjusting seal ringsCompensation of radial and axial shaftdeflectionsNo sealing components mounted on the shaftand hence no additional shaft vibrationsSeal rings running contact-free - sliding facesand machine consume no additional power

Balanced seal ring inside chamber

Advantages

High reliabilityMaintainabilitySegmented seal rings for easy replacementMaintenance-free

Item Description Variablefor width

1.1 Seal ring1.2 Tension spring2 Chamber A2.1 Chamber with O-Ring A3 Barrier gas chamber B3.1 Barrier gas chamber with O-

RingsB

4 Lantern chamber C4.1 Lantern chamber with O-Ring C5 Lantern thin E5.1 Lantern wide F6 End ring G7 Flat seal H8* Housing9* Lid10* O-Ring housing

* On request

14.03.2013 (c) EagleBurgmann


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Espey WKA250ND (2)

Recommended applications

Oil and gas industryRefining technologyChemical industryPetrochemical industry

Pulp and paper industryMetal production and processingPower plant technologyGasesFumes and exhaust, solids containing,flammable (Atex), acid containing and toxicgases(Solids containing) steams / liquid mistOil mist / penetrating oilWater

Integral-gear compressors (one or multi-stage)Screw and chiller compressorsSteam turbinesRegulating devices

Standards and approvals

FDA

Operating range

Shaft diameter: d = 20 ... 340 mm (0.79" 13.39")Operating pressure: p = vacuum ... 15 bar (218 PSI) abs.

Operating temperature: t = -120 C ... +500 C (-184 F +932 F) for carbon,max. 225 C (437 F) for PTFE compoundSliding velocity: vg = max. 240 m/s (787 ft/s) for carbon,max. 40 m/s (131 ft/s) for PTFE compoundRadial play: 2.0 mm ( 0.08")Axial movement: theoretically unlimitedRecommended wear guard: >58 HRC

Materials

Seal ring: Carbon, PTFE compoundChamber and housing parts: 1.4021, 1.4571,

Hastelloy, Titanium, Inconel, othersTension spring: 1.4571, Hastelloy,Titanium, Inconel,Secondardy seal (elastomer): Fluorocarbonrubber (Viton), Nitrile-butadiene-rubber(Perbunan), Perfluorocarbon rubber(Kalrez)Secondary seal (flat gasket): Statotherm-HT/HD, KSiL C 4400






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Espey WKA250ND (3)

Installation, Details, Options

DetailChamber parts

DetailSeal ring Espey WKA250 (3-part, radial cut)






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Espey WKA250ND (4)

Dimensions

dh6 DH7 d1 A B C E F G H

20 60 22 8 21 16 11 - 5 1

25 65 27 8 21 16 11 - 5 1

30 70 32 8 21 16 11 - 5 1

35 75 37 8 21 16 11 - 5 1

40 80 42 8 21 16 11 - 5 145 90 47 8 21 16 11 - 5 1

50 100 52 8 21 16 11 17 5 1

55 105 57 8 21 16 11 17 5 1

60 110 62 8 21 16 11 17 5 1

65 115 67 8 21 16 11 17 5 1

70 120 72 8 21 16 11 17 5 1

75 125 77 8 21 16 11 17 5 1

80 130 82 8 21 16 11 17 5 1

85 135 87 8 21 16 11 17 5 1

90 140 92 8 21 16 11 17 5 1

95 145 97 8 21 16 11 17 5 1

100 150 102 8 21 16 11 17 5 1

105 155 107 8 21 16 11 17 5 1110 160 112 8 21 16 11 17 5 1

115 165 117 8 21 16 11 17 5 1

120 190 123 10 27 21 15 20 8 2

130 200 133 10 27 21 15 20 8 2

140 210 143 10 27 21 15 20 8 2

150 220 153 10 27 21 15 20 8 2

160 230 163 10 27 21 15 20 8 2

170 240 173 10 27 21 15 20 8 2

180 250 183 10 27 21 15 20 8 2

190 260 193 10 27 21 15 20 8 2

200 270 203 10 27 21 15 20 8 2

210 280 213 10 27 21 15 20 8 2

220 290 223 10 27 21 15 20 8 2230 300 233 10 27 21 15 20 8 2

240 310 243 10 27 21 15 20 8 2

250 320 253 10 27 21 15 20 8 2

260 330 263 10 27 21 15 20 8 2

270 340 273 10 27 21 15 20 8 2

280 350 283 10 27 21 15 20 8 2

290 360 293 10 27 21 15 20 8 2

300 370 303 10 27 21 15 20 8 2

Dimensions in mmSpecial sizes on request.





eagleburgmann_espey wka250nd_en.pdf

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